#include <iostream>
using namespace std;
int main(int argc, char * argv[])
{
  double a, b, c, D;
  cin >> a >> b >> c;
  if(a>0)
  {
  D = b * b - 4 * a * c;
  cout << (D >= 0);
  }
  else
  {
  cout <<"oshibka, a<0";
  }

  return 0;
}
